How is the actual situation of Mathematics Education in DPR Korea (North Korea)?

Dear colleagues: Good morning. It's common to get biased information on North Korean educacional system from official sources from South Korea. Please, could you suggest me papers or books which...

30 November 2019 1,817 3 View

What is the place of Mathematics Education into general theory of Education?

Good afternoon. I am studying on the nexuses between general theory (or theories) of Education and particular theory (or theories) in Mathematics Education. Please, could you point out if it is...

25 June 2019 2,820 5 View

Do you know methodologies about assessing teaching in Basic Education?

Dear colleagues: Please, do you know methodologies about assessing teaching in Basic Education around the world? Could you apppoint me bibliography on this matter? Thank you! Luis

28 August 2017 5,018 20 View

Is this a Triakis maculata specimen?

11 December 2014 9,025 7 View

Is this a Triakis maculata specimen?

30 November 2014 8,829 6 View

Logistical regression using SPSS for a dichotomous dependent variable, with an independent variable of 1, 2, 5 and 10 seconds?

I have an experiment with 28 participants The independent variable is the times 1, 2, 5, and 10 used as the cross hairs during a task These 4 times were tested using 4 different blocks, each...

03 March 2021 9,692 2 View

Do I need to do linear regression before running mediation analysis using PROCESS MACRO by Hayes ?

I just wanted to check if I need to run a linear regression separately if I am using PROCESS MACRO to run mediation analysis. Thank you.

02 March 2021 4,359 3 View

How to choose ANN number of hidden layers and nodes?

Hello, Could you please share any interesting research explaining how to choose the number of hidden layers and nodes per layer in case of regression problems using ANN? Thank you, any help would...

01 March 2021 6,200 3 View

Can polymer concentrations be calculated based on the number average molecular weight?

Hello, I spin-cast two different polymers onto wafers and measure their height as a function of initial concentration. For polymer A, I have the weight-average molecular weight (Mw) as well as...

28 February 2021 7,882 2 View

Can anyone provide the Support vector regression code structure of LIBSVM MATLAB or python ?

Please, if Gaussian Parameter optimization is possible in this code structure

28 February 2021 278 3 View

How could I take into consideration the weights of observation in a system of seemingly unrelated regressions (SUR) in rstudio?

I build a model of 4 regression equations (probit and OLS) in R studio. I need to take the weights of observations into consideration. While it is simple to do so for every regression equation,...

27 February 2021 1,233 1 View

VIF very high, but correlation is low and coefficient is significant. Which one whould I choose?

Hello. I have a question whether if my coefficients (statistically significant) would be valid when VIFs are really high. In my model, there are independent variables(IV), moderating variables...

26 February 2021 956 13 View

Treating Intermediate Variable in Linear Regression Analysis in SPSS?

While performing the Linear regression analysis in SPSS version 26.0.0. my intermediate/mediation variable goes to the excluded section. Please share your valuable suggestion "How to restrain the...

25 February 2021 4,591 5 View

Cox regression baseline hazard?

Dear colleagues, I would like to make a mathematical equation of Cox regression model, however I am stuck with baseline hazard. I clearly understand interpretation of coefficients, but I can't...

24 February 2021 6,207 3 View

How to run raise regression in R?

if anybody know how to run raise regression in r, and raise parameter selection, please help me

24 February 2021 8,199 1 View